我有一个 Hibernate的DAO ,在根据 Hibernate的API 3 和 春天3.x中 ,我用一个简单的sessionFactory和 NOT 的HibernateDaoSupport+ getHibernateTemplate()-我希望这是一个不错的选择-
sessionFactory
HibernateDaoSupport
getHibernateTemplate()
现在,我的 目标是sessionFactory使用注释将其自动连接到我的DAO中。
在我spring.xml我有这个:
spring.xml
<context:component-scan base-package="data" />
在数据包内部,我拥有所有的DAO和Service类。
这很简单HibernateDao:
HibernateDao
@Repository public class PersonHDAO implements PersonDAO { private SessionFactory sessionFactory; @Autowired public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<Person> findAll(){ return sessionFactory.getCurrentSession().createQuery("bla bla").list(); } }
spring.xml加载期间我没有错误,但sessionFactory仍然是null。
null
我该怎么办?
编辑
这是我的sessionFactory声明spring.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation= "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <!-- <property name="driverClassName" value="org.h2.Driver" /> --> <property name="url" value="my/db/url" /> <property name="username" value="myUsername" /> <property name="password" value="myPassword" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="data" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop> <prop key="hibernate.current_session_context_class">thread</prop> <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property> </bean> <context:component-scan base-package="data" /> <tx:annotation-driven/> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> </beans>
EDIT2 现在sessionFactory不为空,但是我还有另一种例外:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [data.PersonHDAO] is defined: expected single bean but found 0:
也许意味着找不到PersonHDAO豆?
PersonHDAO
谢谢大家
您是否声明了sessionFactory bean?
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation"> <value>file:src/hibernate.cfg.xml</value> </property> </bean>